Diagnoses of Multiple Sclerosis and Related Disorders and Disease‐Modifying Therapies: A Comparison of the Danish Multiple Sclerosis Registry With Other Danish Health Registries

DMSR is suitable for disease-specific research addressing treatment efficacy, disease development, and long-term outcomes. In contrast, DNPR is well suited for broad epidemiological studies involving various health conditions and hospital utilization. The DNHMR will, when matured, be useful for studies involving medical treatment and comedication. However, as each registry has limitations, for most studies the best approach will be combining registries, depending on the research question.